[Lustre-discuss] Regarding redundancy

[Arne Wiebalck]

Brian,

[snip]

> If the lost client has a transaction that needs to be replayed, all of
> the transactions up to that missing transaction are replayed but all
> subsequent transactions are discarded and when the recovery timer
> expires, recovery is aborted.

Thanks a lot for the details. 

So, even clients working on disjoint files/objects will experience that
their data are lost when one client is lost during recovery ? 
Until 1.8.something, that is :) 

[snip]

> Yes, that is the official statement and I don't think any further
> testing has been done to change that statement, officially, but I think
> the general feeling is that quiescence should not be necessary, but we
> just don't have the scientific testing to be assured of that.
> 
> So if you want to be safe, quiesce the filesystem first.  :-)

Well, if I can do that :-)

Thanks again!
 Arne